@article{ref1,
title="Human thresholds of electric shock at power transmission frequencies",
journal="Archives of environmental health",
year="1970",
author="Keesey, J. C. and Letcher, F. S.",
volume="21",
number="4",
pages="547-552",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-9896",
doi="",
url="http://dx.doi.org/"
}